پژوهشی دانشگاه اصفهان -علوم پایه, Volume (13), No (1), Year (2000-4) , Pages (12-20)

Title : ( THE EFFECT OF WATER CONTENT ON THE MECHANICAL ‎BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS )

Authors: Gholam Reza Lashkaripour , R. Ajalloeian ,

Citation: BibTeX | EndNote

Abstract

To investigate the effect of water content on the mechanical behavior of fine-grained ‎sedimentary rocks three different types of shales; clayshale, mudshale and mudstone, from ‎different locations were studied. The samples were tested at different water contents ranging ‎from oven-dried to saturated condition. Preparing samples of standard size for testing was a ‎troublesome task. Many samples break during coring, cutting, grinding and storing because of ‎disintegration of these rocks when subject to change in water content. This nondurable ‎behavior of these rocks is responsible for numerous slope instability problems, underground ‎excavation problems and embankment failures.‎ Water content has been demonstrated to have a marked influence on the strength and ‎deformation properties. The uniaxial compressive strength and modulus of elasticity decrease ‎significantly as the water content increases. The results show a reduction of more than 90% in ‎uniaxial compressive strength from oven-dried to saturated condition. This strength reduction ‎due to moisture content for the rocks studied is significantly higher than the values reported ‎by other researchers. A general equation was developed for this type of fine-grained ‎sedimentary rocks that may be used for predicting uniaxial compressive strength from the ‎available information on water content.‎ ‎ ‎ Modulus of elasticity was found to be influenced by anisotropy, but the most significant ‎influence, regarding reduction of the modulus of elasticity, was the change from dry to ‎saturated condition. Test results show a significant reduction in the static modulus of ‎elasticity from oven-dried condition to saturated condition. The results of these tests show an ‎average reduction in modulus of elasticity, from that in dry state, of about 84% for the shales ‎studied. ‎

Keywords

, water content, fine grained soil,
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@article{paperid:1013017,
author = {Lashkaripour, Gholam Reza and R. Ajalloeian},
title = {THE EFFECT OF WATER CONTENT ON THE MECHANICAL ‎BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS},
journal = {پژوهشی دانشگاه اصفهان -علوم پایه},
year = {2000},
volume = {13},
number = {1},
month = {April},
issn = {1684-3711},
pages = {12--20},
numpages = {8},
keywords = {water content; fine grained soil;},
}

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%0 Journal Article
%T THE EFFECT OF WATER CONTENT ON THE MECHANICAL ‎BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS
%A Lashkaripour, Gholam Reza
%A R. Ajalloeian
%J پژوهشی دانشگاه اصفهان -علوم پایه
%@ 1684-3711
%D 2000

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